Chapter 5. Variable Modifiers[����������]

Variable modifiers can be applied to variables, custom functions or strings.
To apply a modifier, specify the value followed by the | (pipe) and the modifier name.
A modifier may accept additional parameters that affect its behavior.
These parameters follow the modifer name and are separated by : (colon).

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{* ����һ��percase the title *}
{* �����д *}

<h2>{$title|upper}</h2>



{* Truncate the topic to 40 characters use ... at the end *}

{* ȡ��ǰ40���ַ� *}

Topic: {$topic|truncate:40:"..."}



{* format a literal string *}

{* ��ʽ�����ִ� *}

{"now"|date_format:"%Y/%m/%d"}



{* apply modifier to a custom function *}

{* ���Զ��庯����Ӧ�õ����� *}

{mailto|upper address="[email protected]"}

If you apply a modifier to an array variable instead of a single value variable, the modifier will be applied to every value in that array.
If you really want the modifier to work on an entire array as a value, you must prepend the modifier name with an @ symbol like so: {$articleTitle|@count} (this will print out the number of elements in the $articleTitle array.)

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�����ֻ��Ҫ��������һ��ֵ������������,������ڵ���������ǰ����@����.
����: {$articleTitle|@count}(�⽫���� $articleTitle ���������Ԫ�ص���Ŀ)????

index.php:



$smarty = new Smarty;

$smarty->assign('articleTitle', 'Police begin campaign to rundown jaywalkers.');

$smarty->display('index.tpl');



index.tpl:



{$articleTitle}

{$articleTitle|capitalize}



OUTPUT:



Police begin campaign to rundown jaywalkers.

Police Begin Campaign To Rundown Jaywalkers.